FirstBank Southwest, Perryton Branch Basic Info Reviews Routing Numbers Map & Direction Name: FirstBank Southwest, Perryton Branch Main Office: No Service: Full Service Brick and Mortar Office Location: 201 South Main Street Perryton, Texas 79070 Ochiltree County View other branches Phone: 806-435-3676 Please enable JavaScript to view the comments powered by Disqus. Routing NumberProcess ACH TransferProcess Wire Transfer111302095YY111308057YY111322910YN From: To: